1887

Abstract

Summary

The presence of overpressure is a well-known phenomenon in the Pannonian Basin, but the main generation mechanisms have not been clarified yet. Previous studies mainly focused on the current subsurface pressure regime, but the paleo pressure conditions have not been evaluated. The suggested 2D basin modeling approach can deliver adequate information about both the paleo and current abnormal pressure conditions and the main drivers of the development.

Two neighboring subbasins have been selected and simulated for presenting the advantage of 2D basin modeling in regional studies. Comparing the Derecske Trough with the Békés Basin, the measured static pore pressure data prove that the magnitude of overpressure is different, despite of the similar geological history. The 2D basin model suggests that mainly three processes control the subsurface pressure regime development, namely the undercompaction, the centroid effect and the timing of burial or sedimentation.

The main parameters from the master model has been linked with a Monte Carlo simulation and recalculated. The uncertainties in the depth converted seismic maps have resulted only minor effect in the calculated pore pressure model, but uncertainties in porosity and permeability can strongly affect the pressure simulation.

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/content/papers/10.3997/2214-4609.202038013
2020-12-14
2025-07-12
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